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안녕하세요
제가 프로그램을 잘못다루는데 이번에 데이터 베이스 수업이 있네요
그래서 죄송하지만 질문이 좀 있습니다 ^^;
제가 er diagram을 그려야하는데요...
그전에 정규화로 틀좀 잡을라고 했는데
영 잘모르겠어요,,
제가 primary key 와 foreign key 를 맞게썼는지 궁굼하네요
그리고 정규화도 맞게했는지 부탁좀 드려요
그리고 여기서 staffNo, Appointment No 그리고 Invoice No 는 primary key로 좋을것 같은데요...
다른 테이블과 연결이 안되있으면 primary key로 쓸수없는거죠?^^;
감사합니다
primary key는 아래 바 이구요
foreign key 는 * 표시에요
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Pet treatment
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Pet owner
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* Examination No and data
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Owner No
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* Pet NO
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Owner name
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Treatment No
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Adress
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Description
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Home telephone No
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Quantity of each type of treatment
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The data the treatment is to begin and end
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Additional comment
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Pets
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Pet No
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Pet name
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Treatment
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Type of pet
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* Treatment No.
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Description
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Full description of the treatment
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D.O.B
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Cost to the pet owner
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Data registrated
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* Detail of pet owner (Owner No)
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Appointment
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Appointment No
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Staff
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* Owner No.
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Staff No
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* Pet No
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Name
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(Name+Postion=the name of vet) |
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Appointment data and time
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Position
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compound primary key
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Address
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Telephone No
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Invoice
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D.O.B
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Invoice No
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Gender
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Invoice date
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National insurance No
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* Owner No
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Current annual salary
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* Pet No
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Detail of treatment
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Cost of each type of treatment
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Examination
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Total cost
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Examination No
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payment of invoice
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Date and time of examination
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The data the invoice paid
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*The name of vet
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Method of payment
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* Pet No.
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Full description of examination results
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future treatment
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